So i got a sb700 flash a few weeks ago and ive never used a flash before but thought that it would be a good thing to have in the bag.
Just wondering if anyone can give some useful tips for using a flash or recommend any good books.

Here's some great sites that I have learned from...

http://neilvn.com/tangents/
Neil has a lot of articles on how to use on camera flash.

http://strobist.blogspot.ca/2006/03/lighting-101.html